starting zone（起航区）是什么意思？音标发音+图解场景

起航区 /ˈstɑːtɪŋ ˈzəʊn/ n

English: starting zone · 起航区

释义：The first 100 m of the course inside which a race may be invalidated due to technical difficulties.

这个词出现在以下图解场景（1）